Louis hellmak



L. HELLMAN.

Lamp-Wick.

' No. 208,310. Patented Sept. 24,1878.

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v I NVENTOH:

Louie* Heling an, y .54% @7M/4% rr OFFCE;

LoUIsHELLMAN, on cHIcAGo, IL'LrNois.

IMPROVEMENT aN rwacKs.

i To all whom it may concern.-

Specification forming part of Letters Patent No. @@Slh, dated September24, 1878 3' application filed I A `September 3,1878. v y

Be it known that I, LoUIsnHELLMAN, of Chicago, in the county of Cook andState ot' Illinois, have invented or discovered certain new and usefulImprovements in the Preparaf tion of Lamp-Wicks, Yfor the purpose ofrendering the same non-combustible ;and` the following is a full, clear,and exact description of the process employed. f' l The nature of myimprovement consists in subjecting ordinary wicks used in lamps andoil-stoves to a treatment or process whereby the wick is renderednon-combustible, and at the same time has imparted toit greater luminousqualities.

I accomplislvthe objects of my'invention by rst saturating the wick orwicks in kerosene- \oi1, and afterward subjecting them to a bath orpreparation composed of fourparts Glan- -bers salts, four parts chalk,three parts coaldust, fifteen parts sand, and five parts hot water, torender vthe compound fusible. I then prepare a bath by taking one partof this com pound and two parts hot water, and place the wicksin thisbath, having previouslysaturated them with kerosene-oil, letting themremain a sufficient length of timeto become thoroughly impregna-ted withthe compound and, upon taking thewicks out'of the bath, complete theprocess byimmediatelydrying the same, when theyr are ready for use. Thewicks should always be saturated with keroseneoil previously to beingimpregnated 'with this compound, as Athe compound has a Y tion willharden the same and produce a light' equal to gas, as it is well knownthat a hard wick produces a better light than a soft one.

Another superior advantage this wick pos-- sesses isthat it does notrequire afspecial burner, but is adapted to be used in the ordinaryburner in common use.

This wick presents a better bearing-surface than the ordinary wick tothe ratchet-wheels -in the wick-tube, and. is more easily moved up anddown in the same.

As'shown in the drawings, only the uppery portion of the wick -isimpregnated with, the compound, leaving thelower part ofthe wick moretlexible, to conformv tothe shape of thc lamp or oil-receptacle.

What I claimrand desire to secure by Letters Patent, i's' A lamp-wickrendered incombustible and more luminous by being impregnated with acompound consisting of Glauberssalts, chalk,

coal-dust, and sand,v substantially in the manner as herein'described.

y Louis HELLMAN.-

